Carbon pack holder for manifolding typewriters



May 18, 1948.

.1. c. DoYLE CARBON PACK HOLDER FOR MANIFOLDING TYPEWRITERS Filed Nov. 25, 1946 Patented May 18, 1948 UNITED STATE:

sy PATENT` vOFFICE:

CARBON PACK HOLDER FOR MANIFOLDING TYPEWRITERS Joseph Carroll Doyle, Baltimore, Md., assignor to Kee Lox Manufacturing Company, N. Y., acorporation of New York Rochester,

y Application November 23, 1946, Serial No'. 711,875

s claims. (c1. 19t-12er 1 Y l This invention relates to a carbon pack holder for a manifolding typewriter of the type in which a series of sheets of carbon paper are each connected to an independent supporting bar of a movable carriage and interposed between continuous sheets of paper on which the typewritten whereby the carbon paper can be adjusted and renewed without disturbing or changing the posiwhich a'carbon pack is retained by exible means forming` part yof Vthe holdingv sheet and without the use of any metallic fastening devices, or other .parts projecting Ibeyond the edges of the carbon paper- Another purpose of the invention is to afford an improved construction in which the carbon pack is retained on the holding sheet by the engage-Y ment of the carbon pack and carbon paper with the holding sheet in a manner that insures accurate positioning of the carbon pack when it is l attached and prevents injury to the carbon paper.

tion of the holding sheet onl the supporting bar such that it can beV used successfully either with the fan-fold type of manifolding record paper sheets or with manifolding sheets that are notV connected at their side edges.

In structures such as heretofore proposed for using a flexibleholding sheet, the carbony pack has been attached to the holding sheet in various ways, as for instance by means of spring clips or` by means of portions of the carbon paper carrier extending beyond the edges oi the carbon paper and interlockingly engaging slotted portions of the holding sheet, but in all such structures, some part of the' fastening instrumentalities extend beyond the edges of the carbon paper so that when the latter is interleafed between manifolding sheets of the fan-fold type, the carbon paper cannot extend clear to the edges of the manifolding paper sheets, as a result of which the typewritten matter cannot extend entirely tothe edges of the manifolding sheets, and it is a particular purpose of the present invention to provide a flexible holding sheet with means for detachablysecuring a carbon pack in such a Way that the edges of the carbon paper coincide with the edges of the exible holding sheet so that when the carbon paper is inserted between manifolding sheets of the fan-fold type, the carbon paper extends clear to the edges of the manifolding paperand the typewritten matter can extend entirely across the manifolding sheets Without any space Vat the edges being Wasted.

A further purpose of the invention is to vafford a simple, practical, and 10W cost structure' with a flexible holding sheet thatrwil'l permit inserting and removing a carbon pack ,quickly and easily.

Anotherobject of the invention is toaiord a holding sheet of the character' mentioned in To these and other endsthe invention consists.

in the construction and arrangement of parts that will `appear clearly from the following description when read in conjunction with the accompanying drawings, the novel features being pointed out in the claims following the specica.-

tion.

In the drawings: p

Figll is aview in elevationof a supporting bar, with a exible holding rsheetconstructed in accordance witha preferred embodiment of 'the invention and showing a carbon pack in operative position Fig..2 is asectionalview on line 2--2 of Fig. 1;

Fig'.`3is a view in'elevation of the flexible holding sheet. with the carbon pack removed;

Fig. :4 is a detail sectional view on line 4-7-4 of I Fig. 3; l

Fig. 5 is a detail sectional view on line 5 5 of Fig. 4, and f Fig. 6 is a sectional view of the carbon pack.-

ThisY inventionV is in the nature of an improvement on the structure shown inpmy applicationY Serial VNo.y 631,375, filed November 28,1945,

wherein the carbon paper is mounted on a stili carrier, the ends of which extend beyond the edges ofthe carbon paper for interlocking engagement with slotted portions of a holding sheet, which is open to the objection that the extended portions of the .carrier prevent the carbon paper fromv extending clear to the edges of manifolding sheets of the fan-fold type, and the present structure'avoids this objection by anarrangement that permits the carbon A paper carrier to be of the same width as the carbon paper without any portions on ther carrier-extending beyond the carbon paper land hence the edges of the carbon paper can be inserted between fan-fold manifolding sheets clear to the edges ofthe paper sheets, andA as a result the typewritten matter can extend completely from one edge of the paper sheets to the other edge thereof.VV

This is accomplished in the present structure holding sheet,.. the car.b on paperwbeing folded around and under 'ne of 'said retaining'strips'to f' hold the carbon pack against movement endwise 4 of the carbon sheet is threaded under the inner retaining strip 'I and then under the outer retaining strip 8. The carbon pack is then moved outwardly, folding the carbon paper around the inner edge of the inner retaining strip 1 and the outer edge of the carbon pack is inserted under, the;outer retainingstrip 8, theiree end of the Qcarbon .paperbeing 'pulled outwardly until it is stretched tightly around the inner edge of ef the holding sheet wniie the opposite edge effioitheinner retaining strip 1 with the inner porthe carbon pack is inserted under theotlier re taining strip which functions'to" hold the carb' pack against bodily movement away from 'tl`1e`" folding strip when in operativeposition..

In the structure shown, in whichlikereferenceil numerals refer to the same parts throughout.tli'` several views, the flexible holdingsheet includes@ a relatively thin connecting portion Iv of`a s'igl'" thickness of fabric such as the cloth materiali;

tionnof the carbonmpack overlying the strip 1 andfpositionedadjacent to its inner edge while the? outer edge of the carbon pack underlies the'.outerfretainingstrip 8, to prevent bodily t and the carbon paper is then `ready to einseitted between adjacent record sheets cfamanifold ingr paper assembly.

The'uter retaining'strip 8 may consist of a singleply. of flexible material with its ends 9 known as Dupont PX 010th, or other Suitable 20 bent around the edges of the holding sheet I and material permanently secured to a .supporting glued for otherwise festenseiA te the reereeeef Gerben peek beiveeriihe freteinineetrp and;

the lieldinsjeheet Se ,es t Hermit insetnsihe the holding' ,eheet 'l 'and to feeeilpy the.. entire.

fastened' te the 'Supporting bei 2' in any' convert-1525 yiifid'tn oftlieheldiis Sheet- .T`he retaining` strip;

ient way as by Y`folclinglit ,arqundpna edge; of" the"` "supporting bar;a'nd' "seurih 't ih ,.pos'- by springqeiips is; and when'e ceaitaplied; holding [sheet `reina" the suppe'rtie bar; 2"

The?. holding ',sh'eet, includ es a supp tion` ,4f stiifer-,thanthe' conne preferably for-med'. ,of two 0' the material by gluing'or oth w plies `togethe'rfs'o]thatthe' ,con Consiste ef'je eineleply ed .th u tionA consists'of twqfo Ymore material Soasto imperit0 thefs. p i tien suiiieieni'body and 'stiffness toini'ainiain. the carbon pack in proper position.

TheearbenY peekonsisiscof a sheet .O f gerbenpaper 5, hevneenefenfd," a carrier 4pla.i i e' 6 of s tiifca eblestiffmeterietthe ee'rherl.. n. e'ingf continuously'aroun'd the carrier pl te 6'wi'tli'the 4 carbonsurface facing inwardly so asalto p rigi's'ife'zt the in'gers'jfrdin contact e with the boni. i Th'e l board, cardboard, or likejrnalt'erialu width 'as te' enable winding a substantial" quantity of carbon paper#thereonL preferably. abo fourinches in width, the carbon p'ackl'yi'ngy atwise on the stiff supportingportionyg/ o f the'llgold-'- ine .Sheet 'and beiie .leli'lveb'l'y lifelfl fleeen t .e2 meneer the@ willpreseiiilrlee deeerb 'Q 5 freeerld of the carbon pap er"e ite`ri ding 'beyond' the no1-ding sheet feif positioning netweenjsheets fj of acadiennes einem eeeiieieieeiiiiie operation.

The oarloony pack is secured in tion on'the holding sheet'fbyretaini'ng strips'l and '8 which are 'attached'to the' holding sheet'` in a'convenient manner'andcverlieithesaine; theV Peimeir1e-eilrfseeered te retaining strip 8, since onlya' singleA thickness thewfre'e 'edges'tog'ether with a sheet of card'-` board H' such 'as' 5 00M--tagboard of Yabout 2l/iuiio "35 of ar1",inl'1` or4 other 'suitable' s'tiiener' between the'two plies; while-the ends -Ii2 of `oneof Said pliesare extended around the side edgesof the holding 'sheet |an'dglued orotherwise fastened'l i to the rear face of the'sh'eet l.

ion t afford suehstiffness as to enable readily' strip 'as indicated-in Eig. 2;

To reinovel'the"carbionpack from the holding 0 sheet, itis only necessary to grasp the carbon engaging it from under the retaining strip`8 vand moving it over therretaining. strip 41 until thef and .the'carbonpaper is then ready forl a further operation.

Whiley the invention has*A been described in connection.iwith thea particular construction 0f eebelijpeper' is' threaded thereunder. eed' i@ l is desirablgto construct th'eretaining strip 1 fromA I I Several pliesqof material, This vis preferably ac-V Yconlplishedliy'folding'a pice of clo'th'fabric su'cl'il as already d les'cribed along oneedge and gluing Y pack 'at it'sside edgesan'd slide it inwardly, .dis-

strip'l andthen under the retaining strip 8, the, carbon pack being .drawn forwardly overlying the, Operative posiretaining strip-'l andlwith ,its A.outermost edge ,Y 'inserted underthebutermost retainingstrip 8, l

`40 ,l .l It will beuderstpodfthat theretaining strip l '1 may be constructedin yanyotheJ'sui/tahle fashtheading a sheet of carbon paperV vtl'1er'eunder and holding the c arbonvpaper din 'a smooth-fun-Y 5 .wrinkled'sta'te vvl'ieirtl'ie'n carbonY pack'overlies theretaining-strip 'l and the. carbon. paper is i folded around-"thainnerfedgeof the retaining f Shown, it is n ot confined .to thedetails herein Y disclosed, and thisapplicationis intended to cover such changes 'or modifications as may come within the purposes of the improvementor thescope `of the renewing claims.

1. TheV combinationv with a flexible holding 5 porting b e'rp. e menioldirlgtypewritenand e carbonfpackcomprising carrier and a length of carbon paper wound -continuously thereon afiording a multiplicity of superposed thicknesses and a free end extending beyond the holding sheet, of a retaining strip secured to the holding sheet and extending thereacross from one side edge to the other, one edge of the carbon pack overlying said strip and the free end of the carbon paper extending around the inner edge of and under said strip between the strip and the holding sheet, and means for holding the opposite edge of the carbon pack against the holding sheet. l

2. The combination with a ilexible holding sheet that is permanently attachable to a supporting bar oi a manifolding typewriter, and a carbon pack comprising a carrier and a length of carbon paper Wound continuously thereon affording a multiplicity of superposed thicknesses and a free end extending beyond the holding sheet, of a pair of retaining strips secured at their ends to the holding sheet and extending thereacross from one side edge to the other, the carbon pack overlying the inner retaining strip and underlying the outer retaining strip and the free end of the carbon` paper extending around the inner edge of the inner strip and thence under both said retaining strips.

3. The combination with a flexible holding sheet that is permanently attachable to a supporting bar of a manifolding typewriter, and a carbon pack comprising a carrier and a length of carbon paper wound continuously thereon affording a multiplicity of superposed thicknesses and a free end extending beyond the holding sheet, of a pair of retaining strips spaced from each other a lesser distance than the width of the carbon pack and secured at their ends to the holding sheet, said strips extending across the holding sheet from one side edge to the other and the inner retaining strip being spaced a sufficient distance from the holding sheet to permit the free end of the lcarbon Paper to extend thereunder between the inner retaining strip and the holding sheet and the outer retaining strip being spaced a sucient distance from the holding sheet to permit the outer edge of the carbon pack to be inserted thereunder between the outer retaining strip and the holding sheet, the inner edge of the carbon pack overlying the inner retaining strip while the free end of the carbon paper extends around the inner edge of the inner retaining strip and under both said retaining strips.

4. The combination with a ilexible holding sheet that is permanently attachable to a supporting bar of a manifolding typewriter, and a carbon pack comprising a carrier and a length of carbon paper wound continuously thereon affording a multiplicity of superposed thicknesses and a free end extending beyond the holding sheet, of a pair of retaining strips spaced from each other a lesser distance than the width of the carbon pack, said strips being attached to the holding sheet and extending thereacross from one side edge to the other, the inner retaining strip being of stiff material and being spaced a sucient distance from the holding sheet to permit the free end of the carbon paper to extend between the inner retaining strip and the holding sheet and the outer retaining strip being spaced from the holding sheet sufficiently to permit the outer edge of the car-bon pack to be inserted thereunder between said retaining strip and the holding sheet, the inner edge of the carbon pack overlying the rst mentioned retaining strip while the free end .of the carbon lpaper extends around the inner edge of the inner retaining strip and thence under both said retaining strips.

5. The combination with a exible holding sheet that is permanently attachable to a supporting bar of a manifolding typewriter, and a carbon pack comprising a carrier and a length of carbon paper wound continuously thereon afiording a multiplicity of superposed thicknesses and a free end extending beyond the holding sheet, of a pair of retaining strips spaced from each other a lesser distance than the Width of the car-bon pack and extending across the holding sheet from one side edge to the other, the ends of said retaining strips extending around the edges of the holding strip and being attached to the back surface thereof, the carbon pack overlying the inner retaining strip and extending under the outer retaining strip and the free end of the carbon paper extending around the inner edge of the inner retaining strip and thence under both said retaining strips.

6. The combination with a flexible holding sheet that is permanently .attachable to a supporting bar of a manifolding typewriter, and a carbon pack comprising a carrier and a length of carbon paper wound continuously thereon affording a multiplicity of superposed thicknesses and a free end extending beyond the holding sheet, of a pair of retaining strips-spaced from each other a lesser distance than the Width of the carbon pack, the inner strip comprising two plies of material with a stilening layer between, one of said plies having end portions extending around the edges of the holding sheet and attached to the ,back surface thereof and the outer strip having end portions extending around the edges of the holding sheet and attached to the back surface thereof, said outer strip being spaced from the holding sheet suiciently to permit the outer edge of the carbon pack to extend thereunder, the inner edge of the carbon pack overlying the inner strip and the free end of the carbon paper extending around the inner edge of the inner retaining strip and thence under lboth said retaining strips.

JOSEPH CARROLL DOYLE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,236,155 Petit Mar. 25, 1941 2,292,343 McAlVin Aug. 4, 1942 2,343,796 Petit Mar. 7, 1944 v2,387,667 Leibfritz Oct. 23, 1945 

